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But… How general is the PREE? Reversed PREE observed under some conditions Generalized PREE observed under some conditions Alternative methods of analysis Nevin (1988): ”PREE is an artefact because of wrong method of analzing extinction performance” Response unit issue PREE or not dependig on how the response is defined (Mowrer & Jones, 1945!

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Reversed PREE What happens if the subject is exposed to a mixture of PRF and CRF contingencies?

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PREE as a generalization: Ecological validity If applied to a situation with a very specific schecule for a specific behavior  PREE Example: Single mother – child is begging for toys only from mom If applied to various situations with mixed contingencies  Reversed PREE Generalized PREE Example: Mother and father – child begs for toys from both

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Response unit issue

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Free operant responding: What is the response unit? Mowrer & Jones,1945: What should be counted as the response unit - single responses or the unit of responses required for reinforcement? Free-operant Intermittent reinforcemet, e.g., FR4

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Cognition in PREE So, since the behvioral PREE is very robust, a ”cognitive PREE” must be easy to measure Basic prosedure: Behavioral acquisition under 100% vs. 60% reinforcer rate Measurement of verbalized PREE

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Cognition in PREE Prediction of persistence: ”How likely is it that you will continue responding if reward no longer appears?” Several experiments have demonstrated no sensitivity to learning history in predictions

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Cognition in PREE Retrospective judgments: ”How many responses did you emit after reward no longer appeared?” Subjects are very accurate in descrbing their own behavior, including their own extinction persistence